Engineer tool for precise measurements and reliable results - Precise, repeatable measurements: align the ruler with the clearly marked angle scale to produce exact marks and cuts every time. - Durable aluminum alloy: lightweight yet strong for long-lasting performance in woodworking. - Easy angle setup: loosen the adjustment mechanism by turning it counterclockwise to set and lock your desired angle. - Versatile triangle ruler: serves as a rafter square and right angle ruler, ideal for framing, cabinetry, and general carpentry. - Accurate marking and layout: designed for precise angle and line marking to keep your projects professional and consistent. - Multi-function tool: acts as a metal square tool for checking and transferring angles during layout. 2-3 practical use scenarios - Mark and cut precise 90-degree joints and bevels for cabinet frames, shelves, and frames. - Layout roof rafters and framing angles to ensure accurate cuts and connections. - Transfer templates and draw exact lines on boards, plywood, or other workpieces for detailed carpentry work. Material and performance - Aluminum alloy construction for strength, durability, and light weight. - Clear angle scale for easy alignment and consistent results. - Compact triangle ruler design suitable for common woodworking tasks and tool kits.